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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

Displaying all lectures given by: Viqar Husain


PIRSA:19030000  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Matter-Gravity Entanglement in Quantum Gravity
Speaker(s): Viqar Husain
Abstract: Quantum gravity may be viewed as a bipartite matter-geometry system. Evolution of matter-geometry entanglement entropy is an interesting question for issues such as the emergence of QFT on curved spacetime from quantum gravity: emergence would require initial states to evolve to product sta... read more
Date: 07/03/2019 - 2:30 pm

PIRSA:15060032  ( MP4 Medium Res , MP3 , PDF ) Which Format?
A Non-Perturbative Approach to the Cosmological Constant Problem
Speaker(s): Viqar Husain
Abstract:
Date: 26/06/2015 - 2:00 pm

PIRSA:13070082  ( MP4 Medium Res , MP4 Low Res , MP3 , PDF ) Which Format?
Scenes From Polymer Quantization
Speaker(s): Viqar Husain
Abstract: A regime of "polymer quantum field theory on curved spacetime" should emerge in a low energy approximation of quantum gravity based on LQG ideas. This era should be characterized by a polymer scale, and  give modifications to the usual semiclassical approximation. I will describe work on gr... read more
Date: 26/07/2013 - 11:00 am
Collection: Loops 13

PIRSA:12050076  ( MP4 Medium Res , MP4 Low Res , MP3 , PDF ) Which Format?
Time and a Physical Hamiltonian for Quantum Gravity
Speaker(s): Viqar Husain
Abstract: I will describe an approach to the problem of time that uses dust as a time variable. The canonical theory is such that there is a true Hamiltonian with spatial diffeomorphisms as the only gauge symmetry. This feature, and the form of the Hamiltonian, suggest a model for non-perturbative quantum gra... read more
Date: 12/05/2012 - 9:50 am

PIRSA:07110050  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Gravitational collapse in quantum gravity
Speaker(s): Viqar Husain
Abstract: I will describe work aimed at understanding the dynamics of gravitational collapse in a fully quantum setting. Its emphasis is on the role played by fundamental discreteness. The approach used suggests modifications of a black hole's mass loss rate and thermodynamical properties. Numerical simulatio... read more
Date: 07/11/2007 - 3:45 pm

PIRSA:07080001  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Quantum gravity and the Coulomb potential
Speaker(s): Viqar Husain
Abstract: An ingredient in recent discussions of curvature singularity avoidance in quantum gravity is the "inverse scale factor" operator and its generalizations. I describe a general lattice origin of this idea, and show how it applies to the Coulomb singularity in quantum mechanics, and more generally to l... read more
Date: 02/08/2007 - 2:00 pm

PIRSA:06060014  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Strings/Quantum Gravity 3
Speaker(s): Viqar Husain
Abstract:
Date: 08/06/2006 - 3:10 pm

PIRSA:06040007  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Introduction to quantum gravity - Part 23
Speaker(s): Viqar Husain
Abstract:
Date: 05/04/2006 - 8:00 pm

PIRSA:06040005  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Introduction to quantum gravity - Part 22
Speaker(s): Viqar Husain
Abstract:
Date: 05/04/2006 - 6:30 pm

PIRSA:04100041  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Black Hole Geometrodynamics Revisited
Speaker(s): Viqar Husain
Abstract:
Date: 30/10/2004 - 4:55 pm
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